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Impurities

SynThink is a trusted producer and supplier of Pharmaceutical Reference Standards, including Impurity Standards. These materials are essential for pharmaceutical companies conducting research into the quality, stability, and biological safety of drug products. We maintain a robust inventory of API impurities, ready to support your development and regulatory needs.

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Abacavir, Impurities

Abacavir Chloroadenine Cyclopentene Methyl Ester

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CAS No.

: NA

Mol F.

: C12H12ClN5O2

Mol W.

: 293.71

Cat No.

: SA18130

Abacavir, Impurities

Abacavir EP Impurity A

$1,455.00 25 mg

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CAS No.

: 136470-79-6

Mol F.

: C14H18N6O

Mol W.

: 286.33

Cat No.

: SA18125

Abacavir, Impurities

Abacavir EP Impurity D

$1,555.00 25 mg

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CAS No.

: 783292-37-5(base);267668-71-3(HClsalt)

Mol F.

: C14H20Cl2N6O

Mol W.

: 359.25

Cat No.

: SA18126

Abacavir, Impurities

Abacavir EP Impurity F

$295.00 25 mg

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CAS No.

: 1443421-68-8

Mol F.

: C18H26N6O

Mol W.

: 342.44

Cat No.

: SA18120

Abacavir, Impurities

Abacavir Impurity 4; Abaca-1 Impurity

$195.00 25 mg

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CAS No.

: 171887-04-0

Mol F.

: C11H14ClN5O2

Mol W.

: 283.71

Cat No.

: SA18103

Abacavir, Impurities

Abacavir Impurity 5; Abaca-2 Impurity

$95.00 25 mg

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CAS No.

: 172015-79-1; 136522-33-3

Mol F.

: C11H12ClN5O

Mol W.

: 265.7

Cat No.

: SA18104

Abacavir, Impurities, Nitrosamine

Abacavir Nitroso Impurity

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CAS No.

Mol F.

: C14H17N7O2

Mol W.

: 315.33

Cat No.

: SA18127

Abemaciclib, Impurities

Abemaciclib

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CAS No.

: 1231929-97-7

Mol F.

: C27H32F2N8

Mol W.

: 506.6

Cat No.

: SA53300

Abemaciclib, Impurities

Abemaciclib 1-Ethyl N-Oxide Impurity

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CAS No.

: NA

Mol F.

: C27H32F2N8O

Mol W.

: 522.6

Cat No.

: SA53305

Abemaciclib, Impurities

Abemaciclib 2-Chloropyrimidinyl Impurity

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CAS No.

: 1231930-42-9

Mol F.

: C15H13ClF2N4

Mol W.

: 322.74

Cat No.

: SA53309

Abemaciclib, Impurities

Abemaciclib 3-(hydroxymethyl)pyridine Impurity

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CAS No.

: 1648707-16-7

Mol F.

: C21H20F2N6O

Mol W.

: 410.42

Cat No.

: SA53311

Abemaciclib, Impurities

Abemaciclib 3-pyridinaldehyde Impurity

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CAS No.

: 1627082-92-1

Mol F.

: C21H18F2N6O

Mol W.

: 410.4

Cat No.

: SA53310

Abemaciclib, Impurities

Abemaciclib 4-Ethyl N-Oxide Impurity

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CAS No.

: NA

Mol F.

: C27H32F2N8O

Mol W.

: 522.6

Cat No.

: SA53304

Abemaciclib, Impurities, Nitrosamine

Abemaciclib 4-Nitrosopiperazinyl Impurity

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CAS No.

: NA

Mol F.

: C10H15N5O

Mol W.

: 221.3

Cat No.

: SA53306

Abemaciclib, Impurities, Nitrosamine

Abemaciclib Bromopyridinyl N-nitrosopiperazine Impurity

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CAS No.

: NA

Mol F.

: C10H13BrN4O

Mol W.

Cat No.

: SA53307

Abemaciclib, Impurities

Abemaciclib Desfluoro Pyrimidine Impurity

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CAS No.

: NA

Mol F.

: C27H33FN8

Mol W.

: 488.6

Cat No.

: SA53302

Abemaciclib, Impurities

Abemaciclib Piperazine-1,4-diyl Dimer Impurity

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CAS No.

: NA

Mol F.

: C46H46F4N14

Mol W.

: 871

Cat No.

: SA53313

Abemaciclib, Impurities

Abemaciclib Pyridinamine Impurity

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CAS No.

: 1180132-17-5

Mol F.

: C12H20N4

Mol W.

: 220.3

Cat No.

: SA53308

Abemaciclib, Impurities

Abemaciclib Pyrimidine-4-amino Impurity

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CAS No.

: NA

Mol F.

: C27H32F2N8

Mol W.

: 506.6

Cat No.

: SA53303

Abemaciclib, Impurities

Abemaciclib Pyrimidinyl Dimer Impurity

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CAS No.

: NA

Mol F.

: C42H44F4N12

Mol W.

: 792.9

Cat No.

: SA53312

Abiraterone, Impurities

Abiraterone

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CAS No.

: 154229-19-3

Mol F.

: C24H31NO

Mol W.

: 349.51

Cat No.

: SA57800

Abiraterone, Impurities

Abiraterone Acetate

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CAS No.

: 154229-18-2

Mol F.

: C26H33NO2

Mol W.

: 391.55

Cat No.

: SA57801

Abiraterone, Impurities

Abiraterone Acetate Diastereomer

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CAS No.

: 2484719-10-8

Mol F.

: C26H33NO2

Mol W.

: 391.55

Cat No.

: SA57803

Abiraterone, Impurities

Abiraterone Acetate N-Oxide

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CAS No.

: 2517964-85-9

Mol F.

: C26H33NO3

Mol W.

: 407.55

Cat No.

: SA57804

Abiraterone, Impurities

Abiraterone Acetate-5,6-Epoxide

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CAS No.

: 1868064-50-9

Mol F.

: C26H33NO3

Mol W.

: 407.55

Cat No.

: SA57802

Abiraterone, Impurities

Abiraterone Ethyl Ether

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CAS No.

: 2484719-14-2

Mol F.

: C26H35NO

Mol W.

: 377.56

Cat No.

: SA57805

Abiraterone, Impurities

Abiraterone Isopropyl Ether

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CAS No.

: 2484719-15-3

Mol F.

: C27H37NO

Mol W.

: 391.59

Cat No.

: SA57806

Abiraterone, Impurities

Abiraterone Propionate

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CAS No.

: 1620323-43-4

Mol F.

: C27H35NO2

Mol W.

: 405.58

Cat No.

: SA57807

Acalabrutinib, Impurities

Acalabrutinib

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CAS No.

: 1420477-60-6

Mol F.

: C26H23N7O2

Mol W.

: 465.51

Cat No.

: SA46300

Acalabrutinib, Impurities

Acalabrutinib Dimer Impurity

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CAS No.

: NA

Mol F.

: C52H46N14O4

Mol W.

: 931

Cat No.

: SA46307

Acalabrutinib, Impurities

Acalabrutinib M1 Metabolite

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CAS No.

: NA

Mol F.

: C21H19N5O3

Mol W.

: 389.41

Cat No.

: SA46306

Acalabrutinib, Impurities

Acalabrutinib M10 Metabolite

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CAS No.

: NA

Mol F.

: C29H30N8O4S

Mol W.

: 586.66

Cat No.

: SA46305

Acalabrutinib, Impurities

Acalabrutinib M23 Metabolite

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CAS No.

: NA

Mol F.

: C26H25N7O3

Mol W.

: 483.52

Cat No.

: SA46302

Acalabrutinib, Impurities

Acalabrutinib M5 Metabolite

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CAS No.

: NA

Mol F.

: C36H40N10O8S

Mol W.

: 772.83

Cat No.

: SA46304

Acalabrutinib, Impurities

Acalabrutinib M7 Metabolite

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CAS No.

: NA

Mol F.

: C31H33N9O5S

Mol W.

: 643.72

Cat No.

: SA46303

Acalabrutinib, Impurities

Acalabrutinib N-Nitroso Pyrrolidinyl Acid Impurity

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CAS No.

: NA

Mol F.

: C17H16N6O3

Mol W.

: 352.4

Cat No.

: SA46309

Acalabrutinib, Impurities

Acalabrutinib N-Nitroso Pyrrolidinyl Impurity

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CAS No.

: NA

Mol F.

: C22H20N8O2

Mol W.

: 428.5

Cat No.

: SA46308

Acalabrutinib, Impurities

Acalabrutinib open chain impurity; Acalabrutinib Metabolite 27

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CAS No.

: 2230757-47-6

Mol F.

: C26H23N7O3

Mol W.

: 481.51

Cat No.

: SA46301

Acalabrutinib, Impurities

Acalabrutinib Pyrimidinone Impurity

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CAS No.

: 2490433-97-9

Mol F.

: C30H25N7O3

Mol W.

: 531.6

Cat No.

: SA46310

Acarbose, Impurities

Acarbose EP Impurity A

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CAS No.

: 1013621-79-8

Mol F.

: C25H43NO18

Mol W.

: 645.61

Cat No.

: SA58700

Acarbose, Impurities

Acarbose EP Impurity B

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CAS No.

: NA

Mol F.

: C26H43NO17

Mol W.

: 641.62

Cat No.

: SA58701

Acarbose, Impurities

Acarbose EP Impurity C

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CAS No.

: 610271-07-3

Mol F.

: C25H43NO18

Mol W.

: 645.61

Cat No.

: SA58702

Acarbose, Impurities

Acarbose EP Impurity D

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CAS No.

: 68128-53-0

Mol F.

: C19H33NO13

Mol W.

: 483.46

Cat No.

: SA58703

Acebutolol, Impurities

Acebutolol EP Impurity D

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CAS No.

: 57898-80-3

Mol F.

: C14H22N2O3

Mol W.

: 266.34

Cat No.

: SA58200

Acebutolol, Impurities

Acebutolol EP Impurity E

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CAS No.

: 27783-53-5

Mol F.

: C16H26N2O3

Mol W.

: 330.85

Cat No.

: SA58201

Acebutolol, Impurities

Acebutolol EP Impurity G

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CAS No.

: 1330165-98-4

Mol F.

: C33H47N3O8

Mol W.

: 613.74

Cat No.

: SA58202

Aceclofenac, Impurities

Aceclofenac EP Impurity A

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CAS No.

: 15307-86-5;15307-79-6(sodiumsalt);15307-81-0(potassiumsalt)

Mol F.

: C14H11Cl2NO2

Mol W.

: 296.15

Cat No.

: SA12803

Aceclofenac, Impurities

Aceclofenac EP Impurity B

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CAS No.

: 15307-78-5

Mol F.

: C15H13Cl2NO2

Mol W.

: 310.18

Cat No.

: SA12802

Aceclofenac, Impurities

Aceclofenac EP Impurity C

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CAS No.

: 15307-77-4

Mol F.

: C16H15Cl2NO2

Mol W.

: 324.2

Cat No.

: SA12801

Aceclofenac, Impurities

Aceclofenac EP Impurity D

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CAS No.

: 139272-66-5

Mol F.

: C17H15Cl2NO4

Mol W.

: 368.21

Cat No.

: SA12804